________ have you been ________ I saw you last time?A.Since,where B.When,where C.Where,since D.While,as

问题描述:

________ have you been ________ I saw you last time?
A.Since,where B.When,where C.Where,since D.While,as

答案C 时间状语从句典型题例since是连词引导时间状语从句“自从……以来”常与现在完成时搭配,根据题意应选C.查看原帖>>